1. Standard test method for measurement of fracture toughness;ASTM E1820,2011
2. Standard test method for crack-tip opening displacement (CTOD) fracture toughness measurement;ASTM E1290,2008
3. Standard test method for crack-tip opening displacement (CTOD) fracture toughness measurement;WES 1108,2016
4. Fracture mechanics toughness tests–Part 1: method for the determination of KIc, critical CTOD and critical J values of metallic materials;BS 7448-1;British Standards Institution,1991
5. Fracture mechanics toughness tests–Part: 2 method for the determination of KIc, critical CTOD and critical J values of welds in metallic materials;BS 7448-2;British Standards Institution,1997